MicroSIP is described as 'Free portable SIP softphone for Windows based on PJSIP stack. It allowing to do high quality VoIP calls (P2P or on regular telephones) via open SIP protocol. From cloud of SIP providers you can choose best for you, register account and use it with MicroSIP. You'' and is a Video Calling app in the social & communications category. There are more than 25 alternatives to MicroSIP for a variety of platforms, including Windows, Android, Mac, iPhone and Linux apps. The best MicroSIP alternative is Wire. It's not free, so if you're looking for a free alternative, you could try Wire or Linphone. Other great apps like MicroSIP are PhonerLite, Bria, Yate - Yet Another Telephony Engine and tSIP.
Secure communication platform featuring encrypted chats and calls, file and media sharing, self-deleting messages, device verification, group collaboration, and customizable settings. Supports use across multiple devices with no phone number required for access.
Linphone is one of the most famous open source softphones in the world. It is fully SIP-based, for all calling, presence and IM features.
Zoiper IAX & SIP multilanguage and multiplatform (Windows, Linux and Mac OS X) softphone is a VoIP soft client, meant to work with any IP-based communications systems and infrastructure.
PhonerLite enables your PC to use it for internet telephony (VoIP , Voice over IP, SIP). You need an internet connection and an account from a provider supporting the SIP protocol.
Thoughtfully designed, Bria leverages over 10 years of softphone experience in improving productivity for our customers.
Yate is a softswitch (concept of separating the network hardware from network software).
Lightweight portable SIP softphone with BLF and customizable keypad built with libre/librem/baresip BSD-licensed stack.
The Callcentric Android app allows existing Callcentric customers to place calls worldwide using their Callcentric account.
Softphone.Pro is a SIP softphone compatible with any PBX and CRM, and any industry software.
Line2 is a VoIP phone service that lets you call & text from a separate phone number via WiFi or 3G/4G/LTE. At a small premium, Text & call ANYONE in the US/Canada, forwarding & more. Pick any phone number.
Switzerland
France
EU
Bulgaria
Canada
Poland
United States
Netherlands
its not a SIP client, its PAID social network.